What is probability that between 200 and 500 which are divisible by 7
Answers
Answer:
Let a be the first term and d be the common difference.
The first term between 200 and 500 divisible by 7 is 203 and the last term is 497.
Therefore the first term a = 203 and the common difference d = 7.
We know that sum of n terms of an AP an = a + (n - 1) * d
497 = 203 + (n - 1) * 7
497 = 203 + 7n - 7
497 = 7n + 196
497 - 196 = 7n
301 = 7n
301/7 = n
n = 43.
Therefore, there are 43 integers between 200 and 500 which are divisible by 7.
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